forþ

expresses the continuation of an action

Petrus cnocode forþ oþ þæt hīe hine inn lēton.

Peter kept knocking until they let him in.

c. 992, Ælfric, "On the Festival of St. Peter the Apostle"

out, forth (so as to be seen or known)

Þā tēah heora ōðer forþ fæġere bōc and swīðe medmiċele and mē sealde tō rǣdenne.

Then one of them pulled out a beautiful and very small book and handed me it to read.

late 9th century, translation of Bede's Ecclesiastical History

forwards

God onsende miċelne reġn and strangne wind and grimme ȳst on þā sǣ, swā þæt þæt sċip ne meahte nāwðer swimman ne forþ ne underbæc.

God sent a heavy rain and strong wind and violent storm to the sea, so that the ship couldn't sail either forwards or backwards.

c. 1000, unknown author, Vercelli Homily XIX

forward

Hē rād ðā on his mule mid mycelre fyrde þurh ǣnne hēahne holt mid hetelīcum ġeþance; þā ġefeng hine ān trēow be ðām fexe sona forþan þe hē wæs sīdfæxede and hē swā hangode, and sē mul arn forð fram þām ārlēasan hlāford and Dauides þeġnas hine þurhðydon.

Then he rode on his mule with a great army through a high wood, with hostile intention; then speedily a tree caught him by the hair, because be was long-haired, and he hanged so, and the mule ran forward from the wicked lord, and David's thanes pierced him through.

late 10th century, Ælfric, "Passion of St. Alban, Martyr"

forward to, up to