espouse

verb2

1. •
   To marry.

   • For I am iealous ouer you with godly iealousie, for I haue espoused you to one husband, that I may present you as a chaste virgin to Christ. — 1611
2. •
   To accept, support, or take on as one’s own (an idea or a cause).

   • Those that espoused this ideology […] — 2011