Christians doing work isn't the issue.
The problem is that your interpretation is directly contradicting other very clear portions of Scripture.
If you are claiming that God choses people based on thier behavior, then salvation is by works... and there are too many verses that say 'not by works', and 'by grace through faith'.
God does not choose by works or by grace and faith. The Father calls whom He will...
Joh 6:44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day.
Joh 6:65 And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father.
Act 2:39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
The day of general salvation is the Last Great Day also known as the GWTJ...
Joh 7:37 In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink.
Joh 7:38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
Rev 20:11 And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
Rev 20:12 And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.