Prayer, as defined in the NKJV Study Bible, is based on the Hebrew verb palal, as noted in God’s words to King Solomon when the Lord appeared to him the second time following Solomon’s dedication of the temple:
Then the Lord appeared to Solomon by night, and said to him: ‘I have heard your prayer, and have chosen this place for Myself as a house of sacrifice. When I shut up heaven and there is no rain, or command the locusts to devour the land, or send pestilence among My people, if My people who are called by My name will humble themselves, and pray and seek My face, and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and heal their land.
The word “pray,” as used above in , means “‘to intervene,’ ‘to interpose,’ ‘to arbitrate,’ or even ‘to judge.’ The Lord was asking His people to intercede for others in their prayers.” (NKJV Study Bible, Second Ed., p.671)
So, what does it mean “to intercede for others in prayer?” According to the NKJV Study Bible, based on the Greek words enteuxis and entugchano, translated “intercession,” this term refers to “the act of petitioning God or praying on behalf of another person or group. The sinful nature of this world separates human beings from God. It has always been necessary, therefore, for righteous individuals to go before God to seek reconciliation between Him and His fallen creation. The sacrifices and prayers of Old Testament priests were acts of intercession that point forward to the work of Christ. Christ is, of course, the greatest intercessor.” (NKJV Study Bible, Second Ed., p.1914)