To keep him from death. the pharaoh though there were too many Hebrews and decided to kill the new born male babies.
Moses' mother had to hide him because Pharaoh had ordered all Hebrew baby boys to be killed. By hiding Moses, she hoped to protect him and keep him safe from the decree.
Because he will need it in the underworld,
Possibly derived from another saying "keep your shirt on" ie meaning that taking your shirt off is what you do before settle an argument by fighting.
They keep them inside temples
The Egyptians had decreed to kill all the newborn Israelite boys. Moses' mother hid him for three months (Exodus ch.2) in the house, but later found herself unable to do so (ibid). She then placed him in a waterproofed basket in the river bullrushes (ibid), in the hope that God would provide some form of rescue for him, and that is what happened.
she could not keep him
The Ark
Keep reading on.
Don't lose your head would be a way of saying, try to keep your cool during a rough time. Try to think clearly. .Remain calm .. Keep your head and focus beyond the current crisis.
The Keep Walking phrase was used in the Johnnie Walker advert. The meaning of the phrase is to keep on drinking Johnnie Walker as encouraged in the advert.
You can keep him in the basket and hid him beside the river like moses