Ezekiel 2:1,2 He said to me, "Son of man, stand up on your feet and I will speak to you." As he spoke, the Spirit came into me and raised me to my feet, and I heard him speaking to me.It was the Spirit who raised him up. When God told him to stand, it was the Spirit who made him stand. He didn't do it on his own. Likewise we cannot stand on our own. We need to help of the Spirit of God. He will raise us up and make us stand. But when we try to stand on our own we usually just fall back down.
So now he is filled with the Spirit. The Spirit is what will give him the strength to speak to the nation whether they "listen or fail to listen." Ezekiel is empowered and will not be afraid. It is important to tell the people even when you know the will not listen. But we don't do it alone. He is always by our side. and when everyone opposes us, we should not be afraid. He will take care of us. We are never alone.