Matthew 22:37
Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
( Have to follow for salvation, for this is part of believing in Him. )
John 14:15
"If you love Me, you will keep My commandments.
( Him saying if you obey the greatest command, you will obey the rest of His commands. )
Luke 6:46-49
And why call ye me, Lord, Lord, and do not the things which I say? Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like: He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock. But he that heareth, and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great.
( Here Jesus says you have to be a hearer and a doer, if you are hearer only, and not a doer your fall and ruin will be great. )
Luke 12:45-48
45 But suppose the servant says to himself, ‘My master is taking a long time in coming,’ and he then begins to beat the other servants, both men and women, and to eat and drink and get drunk. 46 The master of that servant will come on a day when he does not expect him and at an hour he is not aware of. He will cut him to pieces and assign him a place with the unbelievers.
47 “The servant who knows the master’s will and does not get ready or does not do what the master wants will be beaten with many blows. 48 But the one who does not know and does things deserving punishment will be beaten with few blows. From everyone who has been given much, much will be demanded; and from the one who has been entrusted with much, much more will be asked.
( Here you have the Lord talking about a disobedient servant, if He was come today and catches you not doing what He has told you to do then you will be thrown out with the unbelievers in the lake of fire for disobedience. )