2 Peter 3:9

The Lord is not slack concerning His promise, as some count slackness, but is longsuffering toward us, not willing that any should perish but that all should come to repentance.

We can’t give up on the unsaved people of this world because God hasn’t.  He died for the lost and waits patiently for that moment when a person turns to Him.  At some point, we all have searched for the answers and waited to find the truth from God.  Sometimes it was a word from a friend or someone we met who made that difference and led us to repentance.  Patience and kindness was the key to helping us and is the key to assisting others in getting saved.