1. When God makes the unconditional and unilateral New Covenant, what do you observe?

I will sprinkle clean water on you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you. And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh. And I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules. (Ezek 36:25-27, ESV)

2. At the Last Supper and night before His crucifixion, Jesus passes a cup to share with His disciples. What covenant is Jesus referring to?

And he took a cup, and when he had given thanks he gave it to them, saying, "Drink of it, all of you, for this is my blood of the covenant, which is poured out for many for the forgiveness of sins. (Matt 26:27-28, ESV)

3. Note carefully the words Jesus speaks during the Last Supper (John 14:26), after His death and resurrection just before He ascends to heaven (Acts 1:8), and the author of Hebrews (Heb 6:17-18). What do you learn about the Holy Spirit? What does it confirm?

But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you. (John 14:26, ESV)

But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth." (Acts 1:8, ESV)

So when God desired to show more convincingly to the heirs of the promise the unchangeable character of his purpose, he guaranteed it with an oath, so that by two unchangeable things, in which it is impossible for God to lie, we who have fled for refuge might have strong encouragement to hold fast to the hope set before us. (Heb 6:17-18, ESV)