Eternity is a mighty long time. Here’s the Good News: By God’s grace alone, He adopts, completely forgives and eternally blesses everyone who repents and trusts in Jesus.
Brandon had a great list of passages to consider in Do you have to repent to be saved? « Touch ya Neighbor Ministries:
God said repent: (Ezekiel 18:30-32; Acts 17:30), the Prophets said repent: (1 Kings 8:47-49; Ezra 10:11; Isaiah 55:6-7; Isaiah 1:16-17), John the Baptist said repent: (Matthew 3:1-12; Mark 1:4; Luke 2:3; Luke 2:8),Jesus said repent: (Mark 1:14-15; Luke 5:32; Luke 13:5; Luke 15:7; Matthew 4:17; acts 5:31), the disciples said repent: (Mark 6:12), Paul said repent: (Romans 2:4-5; 2 Corinthians 7-10; Acts 17:30), Peter said repent: (Acts 2:38; Acts 3:19-20; Acts 11:18), John said repent: (Revelations 2:5; Revelations 2:16; Revelations 3:3; Revelations 3:19), James said repent: (James 4:9-10).
My favorite (I love Acts 17!):
The times of ignorance God overlooked, but now he commands all people everywhere to repent, because he has fixed a day on which he will judge the world in righteousness by a man whom he has appointed; and of this he has given assurance to all by raising him from the dead. Acts 17:30-31
Point people to the Word (Jesus – John 1) and the word (the Bible).