Again, if two lie together, then they have heat,.... The Targum adds, in the winter; when it is a cold season, they warm one another by lying together. The Targum interprets it of a man and his wife; it is true of others; see 1-Kings 1:1;
but how can one be warm alone? not soon, nor easily, in time of cold weather. This is true in a spiritual sense of persons in a Christian communion and religious society; when they are grown cold in their love, lukewarm in their affections, and backward and indifferent to spiritual exercises, yet by Christian conversation may be stirred up to love and good works: so two cold flints struck against each other, fire comes out of them; and even two cold Christians, when they come to talk with each other about spiritual things, and feel one another's spirits, they presently glow in their affections to each other, and to divine things; and especially if Christ joins them with his presence, as he did the two disciples going to Emmaus, then their hearts burn within them.

(See on 1-Kings 1:1). The image is taken from man and wife, but applies universally to the warm sympathy derived from social ties. So Christian ties (Luke 24:32; Acts 28:15).

"Moreover, if two lie together, then there is heat to them: but how can it be warm with one who is alone?" The marriage relation is not excluded, but it remains in the background; the author has two friends in his eye, who, lying in a cold night under one covering (Exodus 22:26; Isaiah 28:20), cherish one another, and impart mutual warmth. Also in Aboth de-Rabbi Nathan, c. 8, the sleeping of two together is spoken of as an evidence of friendship. The vav in vehham is that of the consequent; it is wanting 10a, according to rule, in haehhad, because it commonly comes into use with the verb, seldom (e.g., Genesis 22:1) with the preceding subj.