one should consider the following to gain eternal life
1. hear the Goodnews (Rom. 10:14)
2. Believe in it and our Lord Jesus (Rom. 10:9)
3. Repent (Acts. 17:30)
4. get baptised (Matt. 28:19, Col. 2:12)
5. continue to live according to the teachings of Christ till one dies or before Christ second coming. (Galatians 5:22-23, Acts 17:31)

One must to be perfect before he/she can come to our Lord Jesus (Isaiah 1:18, Matt. 11:28)

There was a typo in the last sentence. I meant
One must #not# to be perfect before he/she can come to our Lord Jesus (Isaiah 1:18, Matt. 11:28)