1- The extravagant act of Mary's love for Christ (Mark 14:3-9)
Mark 14:3-9
3 While he was in Bethany, reclining at the table in the home of Simon the Leper, a woman came with an alabaster jar of very expensive perfume, made of pure nard. She broke the jar and poured the perfume on his head.
4 Some of those present were saying indignantly to one another, “Why this waste of perfume? 5 It could have been sold for more than a year’s wages[a] and the money given to the poor.” And they rebuked her harshly.
6 “Leave her alone,” said Jesus. “Why are you bothering her? She has done a beautiful thing to me. 7 The poor you will always have with you,[b] and you can help them any time you want. But you will not always have me. 8 She did what she could. She poured perfume on my body beforehand to prepare for my burial. 9 Truly I tell you, wherever the gospel is preached throughout the world, what she has done will also be told, in memory of her.”
2- The extravagant act of God's love for us
1 John 4:10
10 This is love: not that we loved God, but that he loved us and sent his Son as an atoning sacrifice for our sins.
3- Our extravagant act of love for God
1 John 4:19
19We love because he first loved us.