Here are a number of links for New City Catechism, a new catechism written by Tim Keller for Redeemer Presbyterian, but made available to a wider Evangelical audience.

New City Catechism

• Introduction
• FAQ
• Catechism
• Catechism (pdf)

This Catechism consists of 52 questions and answers and is done in a format for both adults and children. Keller based it primarily on the Calvin’s Geneva Catechism, the Westminster Shorter (107 questions) and Larger Catechisms, and primarily the Heidelberg Catechism (52 Sundays, with 129 questions).

The same Catechism is used for both children and adults, with the adults learning an additional sentence or two. The benefit is that it is all the same. In addition to the question and answer, you will also find a supporting Scripture passage, a commentary and prayer from the saints across the history of the church, and a brief video on which someone explains/comments on the question and answer. It is also divided into three sections: Part 1 – God, creation and fall, law (20 questions); Part 2 – Christ, redemption, grace (15 questions); Part 3 – Spirit, restoration, growing in grace (17 questions).

Here is how Keller explains the Catechism:

We decided to adapt Calvin's Geneva Catechism, the Westminster Shorter and Larger Catechisms, and especially the Heidelberg Catechism, to produce New City Catechism. While giving exposure to some of the riches and insights across the spectrum of these great Reformation-era catechisms, New City Catechism also looks at some of the questions people are asking today.

We also decided that New City Catechism should comprise only 52 questions and answers (as opposed to Heidelberg's 129 or Westminster Shorter's 107). There is therefore only one question and answer for each week of the year, making it simple to fit into church calendars and achievable even for people with demanding schedules.

We wanted to do one more thing. We found that parents who teach their kids a children's catechism, and then try to learn an adult one for themselves often find the process confusing. The children are learning one set of questions and answers, and the parents are learning another completely different set. So New City Catechism is a joint adult and children's catechism. In other words, the same questions are asked of both children and adults, and the children's answer is always part of the adult answer. This means that as parents are teaching it to their children they are learning their answer to the question at the same time.

Attached to each question and answer there is a short written commentary from a historical preacher (e.g., Augustine, Edwards, Spurgeon, Wesley, etc.) and a short video commentary from some of the council members of The Gospel Coalition (e.g., Don Carson, Mark Dever, Kevin DeYoung, John Piper, etc.) and the pastors of Redeemer Presbyterian Church. So the idea is to read a commentary from a historical preacher and then watch a commentary from a modern one.

Here is a sample:

Question 1: What is our only hope in life and death?

Answer 1: That we are not our own but belong, body and soul, both in life and death, to God and to our Savior Jesus Christ.

Scripture: For none of us lives for ourselves alone, and none of us dies for ourselves alone. If we live, we live for the Lord; and if we die, we die for the Lord. So, whether we live or die, we belong to the Lord. Romans 14:7-8

Commentary

If we, then, are not our own but the Lord’s, it is clear what error we must flee, and whither we must direct all the acts of our life. We are not our own: let not our reason nor our will, therefore, sway our plans and deeds. We are not our own: let us therefore not set it as our goal to seek what is expedient for us…. We are not our own: in so far as we can, let us forget ourselves and all that is ours. Conversely, we are God’s: let us therefore live for him and die for him. We are God’s: let His wisdom and will therefore rule all our actions. We are God’s: let all the parts of our life accordingly strive toward Him as our only lawful goal. O, how much has that man profited who, having been taught that he is not his own, has taken away dominion and rule from his own reason that he may yield it to God! For, as consulting our self-interest is the pestilence that most effectively leads to our destruction, so the sole haven of salvation is to be wise in nothing and to will nothing through ourselves but to follow the leading of the Lord alone.

John Calvin (1509–1564). A theologian, administrator, and pastor, Calvin was born in France into a strict Roman Catholic family. It was in Geneva however where Calvin worked most of his life and organized the Reformed church. He wrote the Institutes of the Christian Religion (from which this quote is taken), the Geneva Catechism, as well as numerous commentaries on Scripture.

From Institutes of the Christian Religion, edited by John T. McNeill, translated by Ford Lewis Battles, Library of Christian Classics (Philadelphia: Westminster, 1960), III.VII.I., 690.

Further Reading

"Salvation" in Concise Theology, by J. I. Packer.

Prayer

Lord, here am I; do with me what thou pleasest, write upon me as thou pleasest: I give up myself to be at thy dispose…. The ambitious man giveth himself up to his honours, but I give up myself unto thee;…man gives himself up to his pleasures, but I give up myself to thee;…man gives himself up…to his idols, but I give myself to thee…. Lord! lay what burden thou wilt upon me, only let thy everlasting arms be under me…. I am lain down in thy will, I have learned to say amen to thy amen; thou hast a greater interest in me than I have in myself, and therefore I give up myself unto thee, and am willing to be at thy dispose, and am ready to receive what impression thou shalt stamp upon me. O blessed Lord! hast thou not again and again said unto me…‘I am thine, O soul! to save thee; my mercy is thine to pardon thee; my blood is thine to cleanse thee; my merits are thine to justify thee; my righteousness is thine to clothe thee; my Spirit is thine to lead thee; my grace is thine to enrich thee; and my glory is thine to reward thee’; and therefore…I cannot but make a resignation of myself unto thee. Lord! here I am, do with me as seemeth good in thine own eyes. I know the best way…is to resign up myself to thy will, and to say amen to thy amen.

Thomas Brooks (1608–1680). An English Puritan preacher, Brooks studied at Cambridge University before becoming rector of a church in London. He was ejected from his post, but continued to work in London even during the Great Plague. He wrote over a dozen books, most of which are devotional in character, The Mute Christian Under the Smarting Rod (from which this prayer is taken) being the best known.

From "The Mute Christian Under the Smarting Rod" in The Complete Works of Thomas Brooks, edited by Rev. Alexander Balloch Grosart, Volume 1 (Edinburgh: James Nichol, 1866), 305–306.