Love for Jesus is expressed by keeping his commandments.

John 14:15, 21, 23–24

¹⁵If ye love me, keep my commandments.

²¹He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.

²³Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.

²⁴He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father’s which sent me.