You can harmlessly absorb a weapon you are touching (even a poisoned one) into yourself, as long as it is not in another creature’s possession. The absorbed weapon cannot be felt under the skin and doesn’t restrict your range of motion in any way.

An absorbed weapon cannot be detected with even a careful search, although detect magic reveals the presence of a magical aura. The only evidence of its presence is a faint blotch on your skin.

When you touch the spot (an action equivalent to drawing a weapon), or when the spell ends, the weapon appears in your hand and the spell ends. 

If you attack with the weapon in the same round that you retrieve it from its hiding place, you have advantage on your first attack with it. 

An intelligent magic weapon gets a wisdom saving throw against this spell, but other weapons do not.

At higher levels. If cast at a higher level, the duration is increased by 1 hour for each level beyond 2nd.