Understand the principle of sowing, watering, and reaping
Often times I will find believers that will ask me how I always remain on fire for God and never stop preaching the gospel. They share their frustrations with not seeing souls get saved, or not seeing the fruit of their labor. I remember when I started evangelizing I was on fire for God and would preach to anybody and everybody. However, I quickly came to understand that not everyone was open to receiving Christ, and others were not ready to receive Christ in that moment. God taught me a long time ago a revelation that I call the principle of sowing, watering, and reaping. As an Evangelist it changed my perspective of evangelism forever. God began to teach me through a scripture in the book of 1 Corinthians concerning the times and seasons for souls to be saved. Lets read what the Apostle Paul shared about this principle.
I have planted, Apollos watered; but God gave the increase. So then neither is he that planteth any thing, neither he that watereth; but God that giveth the increase. Now he that planteth and he that watereth are one:and every man shall receive his own reward according to his own labour.
– 1 Corinthians 3:6-8
Notice that the Apostle mentions that he planted, Apollos watered, but God is the one who gives the increase. God began to teach me that the Apostle Paul here represented the believers who planted the seed of the gospel for the first time, Apollos represented believers who watered seeds that were already planted by other family, Friends, or preachers.
There will be times that we preach the gospel to somebody but they will refuse to accept Jesus as their Lord and Savior. Does that mean that we were unsuccessful? Ofcoure not! There will be people that you will preach to that you will plant the seed and immediately it will get watered and grow unto salvation. However, there will be people that you will plant the seed of the gospel and though they reject it in the moment, the Lord will be working in their hearts till the time is right for them. Others will evangelize and help water a seed that someone else planted years ago and will reap the soul in that moment. Notice that its God that brings the increase, in other words, God is the one that convicts and leads that person to repentance. Paul goes on to say that both the one who sows and the one who waters are one. Both the one who planted the seed and the one who waters the seed will both be rewarded. This means that when you preach the góspel you will never fail!
Its impossible to fail in evangelism because when you witness you are either planting a seed, watering a seed, or reaping a seed unto eternal life. The góspel can never return void, sooner or later it will germinate unto eternal life. Some may never receive Christ but they will not have any excuse before heaven because you presented the góspel to them and they rejected the eternal seed.