1 Peter 2:2
As newborn babes, desire the sincere milk of the word, that ye may grow thereby:
When a child is born, he is fed and then grows.
When you give our heart to Christ, you become a spiritual babe and for you to therefore grow, you have to feed on the Word. So you must make it a routine to study God’s Word at all times because the more you feed on the Word, the more spiritually built up you become.