Refuse Younger Widows
1Tim 5:11 But refuse the younger widows; for when they have begun to grow wanton against Christ, they desire to marry,
What is implied here is that getting on the list meant the widow was committing herself to live the rest of her life celibate.
The practice in Catholicism of certain young men and women vowing themselves to a lifetime of celibacy is not wise, as we can see from this and the next two verses.
The NASB puts it "for when they feel sensual desires in disregard of Christ, they want to get married"
Becoming a Christian does not free one from sensual desires. Rather the Christian learns to regulate their sensual desires. For example Paul advises "if they cannot exercise self-control, let them marry. For it is better to marry than to burn with passion." 1Cor 7:9