St Ignatius (Brianchaninov). "On Prelest". On Loving God.
Love God in the way that He commanded us to love Him, not in the way that the deluded dreamers think to love Him.
Do not invent ecstasies for yourself, do not agitate your nerves, do not inflame yourself with a sensual fire, a fire of your blood. The sacrifice that pleases God is humility of heart, compunction of soul. God angrily turns away from a sacrifice brought with self-assurance and proud arrogance, even if it were a whole-burnt offering.
Pride agitates the nerves, inflames the blood, awakens the imagination, and stimulates a fallen life. Humility calms the nerves, cools the blood, destroys imagination, eradicates the fallen life, and awakens life in Jesus Christ.
"To obey is better than sacrifice, and to heed than the fat of rums," said the prophet to the king of Israel, who dared to offer God an unlawful sacrifice (1 Sam 15:22). If you desire to bring God a sacrifice of love, do not bring it willingly, without preparing it thoughtfully. Bring it with humility, in the time and place that God Himself commanded.
The spiritual place where God commanded us to bring spiritual sacrifices is humility (Alphabetical Patericon. About Abba Poemen the Great).