You can receive grace from the throne of Jesus all the time. Prayer brings you to His throne.

“And I will pour on the house of David and on the inhabitants of Jerusalem the Spirit of grace [chen] and supplication [tachanun]” (Zech 12:10)
“praying always with all prayer and supplication in the Spirit, being watchful to this end with all perseverance and supplication for all the saints” (Eph 6:18)
“Let us therefore come boldly to the throne of grace, that we may obtain mercy and find grace to help in time of need.” (Heb 4:16)
“Blessed be the LORD, because He has heard the voice of my supplications!” (Ps 28:6)
“And may You hear the supplications [tachanun] of Your servant and of Your people Israel, when they pray toward this place. Hear from heaven Your dwelling place, and when You hear, forgive.” (2Chr 6:21)
“Hear the voice of my supplications [tachanun] when I cry to You” (Ps 28:2)
“Nevertheless You heard the voice of my supplications [tachanun] when I cried out to You.” (Ps 31:22)
“Give ear, O LORD, to my prayer; and attend to the voice of my supplications [tachanun].” (Ps 86:6)
“I love the LORD, because He has heard my voice and my supplications [tachanun].” (Ps 116:1)
“Lord, hear my voice! Let Your ears be attentive to the voice of my supplications [tachanun].” (Ps 130:2)
“I said to the LORD: You are my God; hear the voice of my supplications [tachanun], O LORD.” (Ps 140:6)
Hear my prayer, O LORD, give ear to my supplications [tachanun]! In Your faithfulness answer me, and in Your righteousness.” (Ps 143:1)
“They shall come with weeping, and with supplications [tachanun] I will lead them.” (Jer 31:9)
“Then I set my face toward the Lord God to make request by prayer and supplications [tachanun], with fasting, sackcloth, and ashes.” (Dan 9:3)
“Now therefore, our God, hear the prayer of Your servant, and his supplications” (Dan 9:17)
“for we do not present our supplications before You because of our righteous deeds, but because of Your great mercies.” (Dan 9:18)
“At the beginning of your supplications the command went out, and I have come to tell you, for you are greatly beloved” (Dan 9:23)
Reading: Zech 11-13; Heb 6