We continue seeing the prevalence of the number 7 in the bible and religion

Anyone who dares to kill Cain ‘will suffer vengeance seven times over’ (Genesis 4:15)

Lamech in his “Song of the Sword” claims that ‘if Cain shall be avenged sevenfold’, he himself shall be ‘seventy-sevenfold’ (Genesis 4:24)

Noah is commanded to bring seven pairs of every clean animal onto the ark (Genesis 7:2)

Seven years of plenty and seven years of famine in Pharaoh’s dream (Genesis 41)

In regards to the sin sacrifice, the anointed priest was to sprinkle the bullock’s blood seven times before the lord (Leviticus 4:6)

Seven days of the feast of Passover (Exodus 13:3–10)

In Indian mythology
Celestial group of seven stars are named as “Sapta Rishi” based on the seven great saints.

Seven Promises, Seven Rounds in Hindu Wedding and Seven Reincarnation

According to Hinduism, there are seven worlds in the universe, seven seas in the world and seven Rishies (seven gurus) called sapta rishis.