While Genesis reveals God as being patient and faithful, He is also holy and just. In Gen. 49, Jacob gathers his sons to tell their futures, both good and bad, based on how they lived their lives. The lesson for Christians today is transparent: What you do now matters!
While God's plan cannot be thwarted by the sinful actions of men, it is magnified when combined with the wise leadership of godly men. Joseph is 'Exhibit A' of this truth, both with his family, and with the Egyptians. Happy is the man who finds wisdom (Proverbs 3:13)!