“But be doers of the word, and not hearers only, deceiving yourselves.” There are some that read the Scriptures much but do it just to attain and gather information. There are those as Pharisees of old that are lovers of the actual Scriptures themselves but will not become a lover of Him who the Scriptures testify. The devil knows more Scriptures and theology then any man. God does not reprimand those who read the Scriptures much, but those who read them and do not practice what they read.

James 1:22
Do not merely listen to the word, and so deceive yourselves. Do what it says. 

Matthew 7:21
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven.

3 John 4
I have no greater joy than to hear that my children are walking in the truth.