And Abraham was old, advanced in years, and the LORD had blessed Abraham in all things. After this verse we read about Abraham’s plan to marry off his son Isaac. Sometimes a person can’t afford to marry. Indeed, Proverbs advises: Prepare your task outside and ready it for yourself in the field. After, you will build your house. In other words, first find a livelihood and only then marry. However, if the parents of a young couple are able to support them, then this too is acceptable. Thus since the LORD had blessed Abraham in all things and he could afford to support another family, therefore, explains the Malbim, it was proper for him to instruct his servant to my birthplace you shall go, and you shall take a wife for my son, for Isaac.