[Gen 6:8-9]:

(v. 8) But Noah found grace ["chen"] in the eyes of the LORD.

(v. 9) These are the records of the generations of Noah. Noah was a just man, perfect [i.e., "complete"] in his generations': Noah walked with God.

[Morris, The Genesis Record, Baker Book House, Grand Rapids, Mich. 1994, p. 177];

"Note the consistent Biblical order here. First, Noah 'found grace.' [i.e., trusted in the grace of God unto eternal life]. Then Noah was 'a just man' (that is, 'justified' or 'declared to be righteous'); thus he was' declared by God to be perfect in his generations' (or 'complete,' in so far as God's records are concerned [and because of God's grace]), and therefore he was enabled to 'walk with God.' Salvation in any era is exactly in this way. By sovereign grace, received through faith, the believer is justified before God and declared to be complete in Him. Only as a result of, and on the basis of, this glorious gift of grace, can one then 'walk' in fellowship with God, showing the genuineness of his faith by his works. Four times it is said later, for example, that Noah 'did all that God commanded him' (6:22; 7;5; 7:9; 7:16)."