Salvation is not just a New Testament thing
The Living Word
In the "New" Testament, salvation is offered through the name of Messiah Yeshua, or Jesus Christ. For example, Acts 4:12 says, "Salvation is found in no one else, for there is no other name under heaven given to men by which we must be saved," and Acts 16:31 says, "Believe in the name of the Lord Jesus and you shall be saved, you and your household."
Is this in conflict with what we are taught in the "Old" Testament?
Joel 2:32 says, "And everyone who calls on the name of Yehovah will be saved."
Are we saved by calling on the name of Yehovah or the name of Yeshua/Jesus?
If we return to the Hebrew language, we will find our answers. The name Jesus is Yeshua in Hebrew. Yeshua means "salvation."
Yeshua is a shortened form of the name Yehoshua (as Mike is the shortened form of Michael). Yehoshua is Jesus’ full name. Yehoshua means "Yehovah is salvation." Yehoshua is Yehovah’s right hand of salvation. He is part of Yehovah and Yehovah is present in his name.
Therefore, when we read in Romans 10:13, which quotes Joel 2:32, "everyone who calls on the name of the Lord will be saved," we know that although the passage is talking about Messiah Yeshua as the Lord, Messiah Yeshua is Yehovah’s right hand of salvation, so calling on the name of Yehovah for salvation is the same as calling on Yeshua.
Hence, the "Old" and "New" Testaments teach the same protocol for salvation – calling on the name of Yehovah/Yehoshua.
Salvation came in the flesh (Yehoshua) to be the spiritual Passover lamb for all eternity: past, present, and future.
The blood of the lamb is the ratification of the "New" covenant given in Deuteronomy 29-31 and referenced in Jeremiah 31, according to Yeshua’s own words in Matthew 26:28, "This is my blood of the covenant which is poured out for many for the forgiveness of sins."
The festival of Passover celebrates the salvation Yehovah gives us through the sacrifice of Yehoshua the lamb.