Imagine having your mother touch your cheek. Then imagine having your spouse or someone you love romantically touch your cheek. Then imagine having a baby touch your cheek. Then imagine having someone you hate and fear touch your cheek. They're very different feelings, aren't they? They all involve the same nerve endings, stimulated in basically the same ways, but with emotional content that varies to every point of the compass. This is because the sense of touch communicates and actually conveys emotion, communicates and conveys love (both good and bad) between people. That's why the Lord so often touched people as a way of healing them; through touch he could convey His love, which is life itself, to the people he touched. It's also why the people of Israel were not to touch the Ark of the Covenant -- their base loves would be conveyed to the holiness represented by the Ark.

'To cover under wings,' as in Psalms 91:4, signifies guarding with the divine truth, which is the divine spiritual. 'Wings' signify spiritual truths. 'Wings,' when related to the Lord, signify the divine spiritual. In the opposite sense, 'wings' relate to falsities and rationalizations from them.

(References: Apocalypse Revealed 245; Deuteronomy 32:10-12; Divine Providence 20-25; Ezekiel 16:8; Malachi 4:2; Matthew 23:37; Psalms 17:8, 26:8, 57:2, 63:8)