When the Lord saw that Leah was not loved, he enabled her to conceive, Gen 29:31
Proverbs 30:23-25 New Life Version (NLV)
23 under a woman who is not loved when she gets a husband, and under a woman servant when she takes the place of the woman of the house.
24 There are four things that are small on the earth, but they are very wise: 25 The ants are not a strong people, but they store up their food in the summer.