The parable of the prodigal son is about a father who runs to meet a returning son and restores him fully, and about an older brother who will not join the celebration. Heaven's joy over one sinner repenting is the point, and the elder brother's refusal is the danger the story leaves hanging.

Arguments about capacity are worth having, but they are not the point of the passage. The Ark is where Genesis shows us judgment and rescue in the same act.

This article explains how Zechariah 4:6 teaches that God accomplishes His purposes through the Holy Spirit, not by human might or resources.