Would this be an accurate description of what it means?
“What was finished? The work necessary to pay for all your sins, His death was sufficient enough to wash all your sins away, ONCE for All. One sacrifice , All sins.”
This was written by non-Catholic Christian friend. I’m not sure if his interpretation of it is accurate.
Thank you for all your help lately

I’ve been asking many questions
I’m going by the context of John’s gospel here. John portrays Jesus as the divine
Logos, who has been with God since the beginning of time and is also God Himself (1:1-5), who came down to earth and became human (1:14) to do what His Father had sent Him to do (4:34; 5:36; 17:4). The completion of Jesus’ work is the
fulfilment of Scripture (19:28) and the performance of the Father’s will:
Meanwhile the disciples were urging him, saying, “Rabbi, eat.” But he said to them, “I have food to eat that you do not know about.” So the disciples said to one another, “Has anyone brought him something to eat?” Jesus said to them, “My food is to do the will of him who sent me and
to accomplish teleiōsō] his work.”
“But the testimony that I have is greater than that of John. For the works that the Father has given me
to accomplish teleiōsō], the very works that I am doing, bear witness about me that the Father has sent me. ”
“And this is eternal life, that they know you the only true God, and Jesus Christ whom you have sent. I glorified you on earth,
having accomplished teleiōsas] the work that you gave me to do.”
After this, Jesus, knowing that all was now
finished tetelestai], said (to
fulfill teleiōthē] the Scripture), “I thirst.” A jar full of sour wine stood there, so they put a sponge full of the sour wine on a hyssop branch and held it to his mouth. When Jesus had received the sour wine, he said, “
It is finished,”
tetelestai] and he bowed his head and gave up his spirit.