Kissing the feet is the most extreme posture of homage, gratitude, or repentance in Scripture — reserved for kings, conquerors, prophets, and ultimately for the Lord Himself. Psalm 2:12 commands the kings of the earth to "Kiss the Son, lest he be angry, and ye perish from the way." The sinful woman of Luke 7:36-50 washed Jesus’ feet with her tears, wiped them with her hair, and "kissed his feet" — and Christ pronounced her sins forgiven. Mary of Bethany anointed His feet and wiped them with her hair (John 12:3). The kiss of the feet is the body’s most humbling gesture; the soul kneels lower than itself. The bride of Christ approaches the Bridegroom on her face.
The act of kissing another's feet as the deepest sign of homage, gratitude, or contrition.
Webster: kiss — “to salute with the lips; especially as a token of respect or affection.”
Foot-kissing in the ancient Near East signaled total submission — rebels lower than the conqueror's footstool, suppliants pleading for life, sinners asking for mercy.
Luke 7:38 — "And stood at his feet behind him weeping, and began to wash his feet with tears, and did wipe them with the hairs of her head, and kissed his feet, and anointed them with the ointment."
Psalm 2:12 — "Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little."
1 Samuel 10:1 — "Then Samuel took a vial of oil, and poured it upon his head, and kissed him."
Acts 20:37 — "And they all wept sore, and fell on Paul's neck, and kissed him."
Modern Christianity has lost the gesture entirely and with it some of the New Testament's most loaded scenes; we read Luke 7 and feel the strangeness, but not the dignity.
The sinful woman did four things at Jesus' feet: wet them with tears, wiped them with her hair, kissed them, anointed them with ointment. Each of those was a public act of total homage — the kind of homage normally reserved for victorious kings.
Psalm 2's command to kiss the Son is the same picture, scaled up: the rebellious nations called to come and submit at the conqueror's feet. Recover the dignity of the gesture, even in restrained Western form, and verses across the Gospels and Psalms read with new weight.
Hebrew names the kiss as a versatile gesture of greeting, blessing, or homage.
H5401 — נָשַׁק (nashaq) — to kiss; greeting, blessing, or submission.
Note: kiss the Son in Psalm 2:12 uses the same verb as kissing a kinsman; the proper homage to a conquering king.
"Kiss the Son before you negotiate with Him."
"The sinful woman's feet-kiss was forgiven; Simon's missing greeting-kiss was rebuked."
"Foot-kissing is extreme homage; Psalm 2 demands it of nations."