Is it by following Jesus' commands, or is it a feeling towards God? How is it demonstrated?
I might be really selfish, I don't know if I have love for God.
God’s love (unconditional love) is described in detail in 1 Cor 13:4-8.
4 Love is patient, love is kind. It does not envy, it does not boast, it is not proud.
5It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs.
6 Love does not delight in evil but rejoices with the truth.
7 It always protects, always trusts, always hopes, always perseveres.
8Love never fails.
If you don’t have love for God, you just don’t understand what He truly did for you. Once you do, love just flows out of you ❤️ Hope this helps