Gen 38: not keeping promises (marrying 3rd son to 1st child's widow), not honoring the law (producing heir for dead brother)
Ps 41: two-faced (gossiping, turning against ~)
Ps 43: but why should we be discouraged and be sad over our fallen nature, when we can put our hope in GOD?
Matt 25: being faithful with what we've been entrusted, using the talents God has given us

Genesis 38:14, Genesis 38:25-26, Psalm 41:5, Psalm 41:6, Psalm 41:9, Psalm 43:5 and Matthew 25:19