Trust is foundational to a godly marriage. The husband's full confidence in his wife frees him from anxiety and removes any temptation to seek gain dishonestly ('no need of spoil'). Her faithfulness creates security. A trustworthy character is one of the greatest gifts one person can give another.
Memory phrase: Be someone people trust.
Talk about it: Why is being trustworthy so important in a family?
Prayer: God, make me someone others can trust.