There were sixteen Judges (or group of Judges) that governed Israel from the time the Israelites took possession of the promised land to the time Saul was anointed their first human king. They were Joshua, Othniel, Ehud, Deborah and Barak, Eli, Gideon, Abimelech (North only), Tola (North only), Jephthah (East only), Samson (in the South and West only), Samuel, Ibzan (East only), Jair (North only), Elon (East only) and Abdon (East only). Samuel's sons comprised the sixteenth and final Judge over Israel. Designated Judges by Samuel when he was old and could no longer perform his duties, they soon became so corrupt in their responsibilities that the Israelites requested a human king be placed over them.
How is the number 16 related to love?
Apostle Paul, in his first book to the Corinthian church, states that there are sixteen distinct things about the quality of love that God has and that he wants us to have as well. Love is incredibly patient and very kind. It never brags about itself or does it envy others. Perfect love does act vainly, behave in an unacceptable manner, is not selfish, is not very easily provoke and thinks no evil of others. It mourns sin but rejoices in what is the truth. Godly love is willing to bear and endure all things, and to hope for and believe the best. This greatest of all spiritual gifts will never EVER fail (1Corinthians 13:4 - 8)!
Additional information on the Biblical Meaning of 16
The 16th time the word "love" is used in 1John it says, "There is no fear in love . . ." (1John 4:18).