Adam Clarke on Genesis 33:4

Esau ran to meet him - How sincere and genuine is this conduct of Esau, and at the same time how magnanimous! He had buried all his resentment, and forgotten all his injuries; and receives his brother with the strongest demonstrations, not only of forgiveness, but of fraternal affection.

And kissed him - וישקהו vaiyishshakehu. In the Masoretic Bibles each letter of this word is noted with a point over it to make it emphatic. And by this kind of notation the rabbins wished to draw the attention of the reader to the change that had taken place in Esau, and the sincerity with which he received his brother Jacob. A Hindoo when he meets a friend after absence throws his arms round him, and his head across his shoulders, twice over the right shoulder and once over the left, with other ceremonies according to the rank of the parties.