Musar su Salmi 43:78

And David when he had already reached this level a great measure said: "May my words be pleasing to Him; I shall rejoice in G-d" (Tehilim 104:34), and "I will come to the altar of God, to God my exceeding joy, and I will thank You with a lyre, O G-d, My G-d" (Tehilim 43:4). And he said: "My lips sing praises, when I sing to You, and my soul which You have redeemed" (Tehilim 71:23).

I will transcribe for you here a passage from Zohar Chadash (Parashas Bereishis 24a): Our Rabbis have taught: When Rabbi Shimon ben Yochai became ill, Rabbi Pinchas ben Yair, Rabbi Chiya and Rabbi Abahu came to visit him. “How can someone who is the pillar of the world possibly die?” they asked. Rabbi Shimon responded, “It is not the Heavenly court that is examining my case. For I have seen that I will not be delivered into the hands of any angel or to the judgment of the Heavenly court, for I am not like other people. Rather the Holy One Blessed is He will decide my case. This is what King David meant when he wrote, ‘Judge me, O God, etc.’ (Tehillim 43:1). Similarly, King Shlomo said, ‘To render the judgment of His servant and the judgment of His people.’ That is, the judgment of His servant is rendered separately from that of other people. “Thus have we learned: ‘When a man dies and the Heavenly court considers his case, some members of the court are inclined to exonerate him while others are inclined to condemn him since they see the guilt of human beings. But if the decision is rendered in the presence of the Holy One Blessed is He it will always be for the good.’ Why is this? Because we have learned: ‘The attributes of the Supernal King always incline to the side of merit.’ For He is entirely merciful and it is in His hands to forgive sins and iniquities. “This is the meaning of the verse, ‘For with You is forgiveness’ (Tehillim 130:4). That is, with Him and with no one else. For this reason I have asked Him to judge my case. At that time I will pass through twelve gates in the World to Come that no one has ever passed through other than the Patriarchs and no one will protest. Moreover, I will not need to request permission.”