He invites them to come unto Him, and promises them rest unto their souls and forgiveness of their sins.
"Come unto me, all ye that labor and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me; for I am meek and lowly of heart: and ye shall find rest unto your souls. For my yoke is easy, and my burden is light." (Matthew 11: 28-30).
"Come now, and let us reason together, saith the Lord; though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." (Isaiah 1: 18).
CAN SINFUL MAN SAVE HIMSELF?
No. The Apostle Paul says salvation "is the gift of God," (Ephesians 2: 8); he also says,
"The wages of sin is death; but the gift of God is eternal life." (Romans 6: 23).
THEN BY WHAT MEANS CAN MAN BE SAVED?
Only through the grace of God, which means by His goodness, favor, or kindness.
"For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: not of works, lest any man should boast." (Ephesians 2: 8, 9).
DOES THIS MEAN THAT WE ARE TO DO NOTHING?
Certainly not, for the next verse of St. Paul's writing states that we must perform good works.