In hinduism,will exchanging garlands with blessing of a preist/God is enough to show that a pair is married ?

Question

Priest i mention here is a learned scholar,who is in charge of a temple

Answer 1

What God joins together, Let NO man separate!
What God does! he does for eternity.
If a marriage is NOT ordained of God, it can still be Blessed by the HOLY GHOST. If the promise of the holy ghost is not given, though a man make vows, there is no marriage.
it is written that a man who is unworthy will not be married and the wife who is faithfull can be given to another. If it is the will of God.
Therefore God is Just
and the judgments of God are surpreme

Answer 2

What kind of priest?