God's work multiplies as long as disciples are being made.
You must be a witness before you can witness. The noun must proceed with the verb.
The disciples of our Lord witnessed first-hand the miracle of multiplication.
We should be with Him, building until the work is done and battling until the victory is won.
When we follow Christ, He will make us fishers of men. If we are not fishing for men, it is evidence that we are not following Christ.
Every Christian will make his own choice on what to use his life for.
Peter was willing to follow Christ based off the word of a preacher.