Proverbs 5:15

To drink from one's own well (see also Song 4:12, 15) means to enjoy sexual relations within marriage. Instead of spending sexual energy on immoral women, a man should build a healthy sexual relationship with his wife. Sex should not be shared with strangers. This honors marriage (Genesis 2:22–25) and follows the seventh commandment (Exodus 20:14 and Deuteronomy 5:18).

These instructions on loving one's wife and avoiding immoral women were originally for young men starting their careers (see also Proverbs 2:16–22; 7:1–27). This topic is also common in ancient Egyptian wisdom writings.