Acts 2:38
"Repent," answered Peter, "and be baptized every one of you in the Faith of Jesus Christ for the forgiveness of your sins; and then you will receive the gift of the Holy Spirit.
Acts 26:20
On the contrary, first to those at Damascus and Jerusalem, and then through the whole of Judea, and to the Gentiles as well, I began to preach repentance and conversion to God, and a life befitting that repentance.
James 1:27
That religious observance which is pure and spotless in the eyes of God our Father is this--to visit orphans and widows in their trouble, and to keep oneself uncontaminated by the world.
James 2:13
For there will be justice without mercy for him who has not acted mercifully. Mercy triumphs over Justice.