Religion

Merriam-Webster's:

"akin to Old High German gilouben to believe, Old English lēof dear — more at LOVE"

American Heritage:

"leubh-
To care, desire; love.

Derivatives include livelong, belief, and libido.

Suffixed form *leubh-o-. lief; leman, livelong, from Old English lof, dear, beloved, from Germanic *leubaz.

O-grade form *loubh-.

leave2, from Old English laf, permission (< “pleasure, approval”);

furlough, from Middle Dutch verlof, leave, permission (ver-, intensive prefix, from Germanic *fer-, see per1);

belief, from Old English gelafa, belief, faith, from Germanic *galaub (*ga-, intensive prefix; see kom). a-c all from Germanic *laub."

Oxford English Dictionary:

"The base in this case is very uncertain. It may show an ablaut variant of the Germanic base of love v.2, lof n., and probably also love n.1 and (with different ablaut grade) lief adj. Alternatively, the verbs may ultimately reflect a derivative formation < a Germanic prefixed adjective (itself of uncertain origin and morphological relationship) whose reflex is seen in Gothic galaufs precious (also galubs ) and Old High German giloub pleasing (in an isolated attestation). (There does not appear to be any substantiation for the very speculative semantic assumptions that underlie an elaboration of this explanation (see J. Trier Holz: Etymologien aus dem Niederwald (1952) 126–31) that attempts to link these adjectives further with the Germanic base of leaf n.1)"

I can't find anything about "make up".