“But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them;”  
2 Timothy 3:14

Jesus’ order is you do the word and you teach the word:
“…Concerning Jesus of Nazareth, which was a prophet mighty in deed and word before God and all the people:”  Luke 24:19
“…Jesus began both to do and teach,”  Acts 1:1
That’s the characteristic of a great man, the one who does and teaches- and that’s why when you hear the word of God be excited when you have the opportunity to do the word; at times those opportunities come disguised as challenges.
“…but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.”  Matthew 5:19
So he says:
“My brethren, count it all joy when ye fall into divers temptations;”  James 1:2
From what the Lord just told us, challenges are an opportunity for you to manifest your greatness; for you to do the word and when you have done the word, then you teach others, like it happened with Jesus:
“Then came the disciples to Jesus apart, and said, Why could not we cast him out? And Jesus said unto them, Because of your unbelief:…” Matthew 17:19-20
He cast the devil first, then explained to them why it worked.
When he sent his disciples out and they returned, they gave their report in accordance to his order:
“And the apostles gathered themselves together unto Jesus, and told him all things, both what they had done, and what they had taught.”  Mark 6:30
It’s nice to talk and criticize people because you assume you know how it should be done; it is wiser to do first and teach others how it’s done!