John 3:16 For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.

Luke 13:3  I tell you, no! But unless you repent, you too will all perish.

Matthew 10:32-33  Whoever acknowledges me before men, I will also acknowledge him before my Father in heaven. 33 But whoever disowns me before men, I will disown him before my Father in heaven.

Mark 16:16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.

Matthew 10:22 All men will hate you because of me, but he who stands firm to the end will be saved.

Revelation 2:10b Be faithful, even to the point of death, and I will give you the crown of life.

 

The answer is that once we’ve heard the message that Jesus took our place and died for us, then what we must do to be saved (according to Jesus) is Believe in Him, Repent from our sins, Confess our belief in Him before men, Be baptized, Stick to our commitment, and Live faithfully after we’ve accepted Him as our Lord and Savior.